This program calculates BMI: import java.util.Scanner; public class BodyMassInde

Question

This program calculates BMI:
import java.util.Scanner;

public class BodyMassIndex
{

public static void main(String argv[])
{

Scanner input = new Scanner(System.in);

String inputString;
double bmi;
double pounds;
double inches;
System.out.print("Please enter height (in inches) ");
inputString = input.nextLine();

try
{
Double.parseDouble(inputString);
}

catch(NumberFormatException nfe)
{
System.out.println("Invalid inch value. Number must be a decimal.");
System.out.print("Re-enter height in inches: ");
inputString = input.nextLine();
}

inches=Double.parseDouble(inputString);

if(inches<=0)
{
System.out.println("Invalid inch value. Must be a positive number.");
System.out.print("Re-enter height in inches:");
inputString = input.nextLine();
inches=Double.parseDouble(inputString);
}

System.out.print("enter weight(in pounds) ");
inputString = input.nextLine();

try
{
Double.parseDouble(inputString);
}

catch(NumberFormatException nfe)
{
System.out.println("Invalid pound value. Number must be a decimal.");
System.out.print("Re-enter the weight in pounds: ");
inputString = input.nextLine();
}

pounds=Double.parseDouble(inputString);

if(pounds <= 0)
{
System.out.println("Invalid pound value. Must be a positive number.");
System.out.print("Re-enter the weight in pounds:");
inputString = input.nextLine();
pounds=Double.parseDouble(inputString);
}

System.out.println("Height = " + inches + """);
System.out.println("Weight = " + pounds + " pounds");
System.out.printf("Body Mass Index = %.1f ",(pounds * 703.)/(inches * inches));

}//end main
}//end BodyMassIndexClass

However I need the program to calculate BMI taking Feet and inches to produce a sample session like this:


Enter height using feet space inches (e.g., 5 6.25): hi there
Invalid feet value. Must be an integer.
Invalid inches value. Must be a decimal number.
Re-enter height using feet space inches (e.g., 5 6.25): 0 9
Invalid feet value. Must be positive.
Re-enter height using feet space inches (e.g., 5 6.25): 5.25 0
Invalid feet value. Must be an integer.
Re-enter height using feet space inches (e.g., 5 6.25): 5 9.25
Enter weight in pounds: 0
Invalid pounds value. Must be positive.
Re-enter weight in pounds: 150.5

height = 5'-9.25"
weight = 150.5 pounds
body mass index = 22.1

Perform input validation by making sure that the user enters a positive integer number for feet, a nonnegative decimal number for inches, and a positive decimal number for weight. See the sample session for details. In particular, note the format for the echo-printed height and weight values and for the generated body-mass-index value.

Is there a way to get the program to do that and make it similar to the above program?

Explanation / Answer

import java.util.Scanner;

public class BodyMassIndex

{

 

public static void main(String argv[])

{

//declaring scanner object

Scanner input = new Scanner(System.in);

//variable declaration

double bmi;

String inputStr;

double pounds;

double inches;

int feets;

System.out.print("Please enter height ( feets and inches) ");

inputStr=input.nextLine();

feets= Integer.parseInt(inputStr.substring(0,1));

System.out.println(feets);

inches=Double.parseDouble

                    (inputStr.substring(2,inputStr.length()));

 

 

while(inches<0||feets<0)

{

    System.out.print("Please enter height(feets and inches) ");

     inputStr=input.nextLine();

     feets= Integer.parseInt(inputStr.substring(0,1));

     inches=Double.parseDouble

               (inputStr.substring(2,inputStr.length()));

    

}

double total=inches+(feets*12);

System.out.print("enter weight(in pounds) ");

pounds= input.nextDouble();

while(pounds<0)

{

 

System.out.println("Invalid pound value. Number must be a decimal.");

System.out.print("Re-enter the weight in pounds: ");

pounds = input.nextDouble();

}

 

 

 

System.out.println("Height = " + feets + "'-"+inches+"''");

System.out.println("Weight = " + pounds + " pounds");

System.out.println("Body Mass Index = "+(pounds * 703)/(total * total));

 

}//end main

}//end BodyMassIndexClass

 

Please enter height ( feets and inches) 5 9.25

enter weight(in pounds) 150.5

Height = 5'-9.25''

Weight = 150.5 pounds

Body Mass Index = 22.062375373066246

 

 

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